/*
 * ProGuard -- shrinking, optimization, obfuscation, and preverification of Java bytecode.
 *
 * Copyright (c) 2002-2018 GuardSquare NV
 *
 * This program is free software; you can redistribute it and/or modify it under the terms of the GNU General Public
 * License as published by the Free Software Foundation; either version 2 of the License, or (at your option) any later
 * version.
 *
 * This program is distributed in the hope that it will be useful, but WITHOUT ANY WARRANTY; without even the implied
 * warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for more details.
 *
 * You should have received a copy of the GNU General Public License along with this program; if not, write to the Free
 * Software Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
 */
package a.annotation.proguard.classfile.attribute.annotation;

import proguard.classfile.*;
import proguard.classfile.attribute.Attribute;
import proguard.classfile.attribute.annotation.visitor.AnnotationVisitor;

/**
 * This Attribute represents a parameter annotations attribute.
 *
 * @author Eric Lafortune
 */
public abstract class ParameterAnnotationsAttribute extends Attribute {
    public int u1parametersCount;
    public int[] u2parameterAnnotationsCount;
    public Annotation[][] parameterAnnotations;

    /**
     * Creates an uninitialized ParameterAnnotationsAttribute.
     */
    protected ParameterAnnotationsAttribute() {}

    /**
     * Creates an initialized ParameterAnnotationsAttribute.
     */
    protected ParameterAnnotationsAttribute(int u2attributeNameIndex, int u1parametersCount,
        int[] u2parameterAnnotationsCount, Annotation[][] parameterAnnotations) {
        super(u2attributeNameIndex);

        this.u1parametersCount = u1parametersCount;
        this.u2parameterAnnotationsCount = u2parameterAnnotationsCount;
        this.parameterAnnotations = parameterAnnotations;
    }

    /**
     * Applies the given visitor to all annotations.
     */
    public void annotationsAccept(Clazz clazz, Method method, AnnotationVisitor annotationVisitor) {
        // Loop over all parameters.
        for (int parameterIndex = 0; parameterIndex < u1parametersCount; parameterIndex++) {
            int annotationsCount = u2parameterAnnotationsCount[parameterIndex];
            Annotation[] annotations = parameterAnnotations[parameterIndex];

            // Loop over all parameter annotations.
            for (int index = 0; index < annotationsCount; index++) {
                // We don't need double dispatching here, since there is only one
                // type of Annotation.
                annotationVisitor.visitAnnotation(clazz, method, parameterIndex, annotations[index]);
            }
        }
    }
}
